Dial for a lock



FIG. 1 is a top, front, and left side perspective view of a dial for a lock showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is an enlarged fragmentary front elevational view thereof; and,

FIG. 5 is a fragmentary left side elevational view thereof.

The broken-line disclosure in the views is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a dial for a lock, as shown and described. 